Fountain-pen.



No. 767,208 QPATENTEDI AUG; 9, 1904 s. s. GROCKER. v

FOUNTAIN PEN.

APPLICATION mm) HAY 2a. 1904.

N0 MODEL.

ll/t'Zrzes5es:

UNITED STATES Patented August 9, 1904.

PATENT OEEIcE.

SETH S. CROCKER, OF BOSTON, MASSACHUSETTS, ASSIGNOR TO RALPH C. CROCKER,OF CLIFTON, MASSACHUSETTS.

FOUNTAIN-PEN.

SPECIFICATION forming part of Letters Patent No. 767,208, dated August9, 1904:.

Application filed May 28, 1904.

To all whom it may concern.-

Be it known that I, SETH S. CRooKER, of Boston, county of Suffolk, Stateof Massachusetts, have invented an Improvement in Fountain-Pens, ofwhich the following description,

in connection with the accompanying drawings, is a specification, likecharacters on the drawings representing like parts.

This invention relates to certain improve- IO ments upon thefountain-pen disclosed in Patent No. 678,547 issued to me July 16, 1901,in which I have disclosed a fountain-pen which is adapted to be filledby blowing into the end of the barrel of the pen to collapse a rubber I5 sack, so that when the air-pressure is relieved the sack may expandand suck in the ink.

WVhile the above-described construction enables the fountain-pen to befilled readily, yet said construction is open to several objections,which are as follows: By having the aperture through which air is forcedin the end of the barrel the air-pressure is first applied to the end ofthe sack, and if the sack should fit the barrel tightly the applicationof 5 the air-pressure to the end of the sack alone makes it difiicult tocollapse the same, so that it is necessary to make the sack looselyfitting in the barrel, thereby enabling the air to pass the inner end ofthe sack and be applied to 3 the sides thereof. Obviously any reductionin the size of the sack correspondingly decreases the holding capacityof the pen, thereby necessitating more frequent filling.

Another disadvantage of the above construction is that in case the sackshould leak slightly, as sometimes happens, the ink may run down thebarrel through the hole in the end of the barrel when the pen is carriedin the pocket in the usual manner. The hole in 4 the end of the barrelalso sometimes becomes filled with dirt or lint, thereby preventing theready passage of air into the barrel.

The object of my invention is to provide a construction of pen which isadapted to be filled by introducing air-pressure into the barrel,whereby the air-pressure may be applied to the sides of the sack insteadof against the end thereof, although the sack may tightly fit thebarrel, and whereby the aperture in the Serial No. 210,166. (No model.)

end of the barrel and its attendant disadvan- 5o tages may be done awaywith.

In the drawings, Figure 1 is a side elevation of a fountain-pen providedwith my invention, the cap being shown in cross-section. Fig. 2 is acentral longitudinal section of the barrel and cap of a fountain-penprovided with my invention. Fig; 3 is a sectional view of a modifiedform of my invention.

As shown in the drawings, the barrel (0 is provided with the usualpen-section b and sack c, of rubber, which is connected at its open endto the inner end of the pen-section. This sack is designed to fit thebarrel of the pen closely and to have its inner end extend nearly to theinner end of the barrel. The opposite end of the barrel from thepen-section is preferably tapered, and the usual cap d, having anaperture d in its closed end, is provided, the open end of which isadapted to fit the barrel tightly at a point some distance from the endof the barrel, and the barrel preferably being slightly tapered fromthis point. One or more apertures are formed in the sides of the barrelbetween the end thereof and the point where the cap fits onto thebarrel, the tapered end of the barrel providing an open passage betweenthe interior of the barrel through the apertures a to the interior ofthe cap (Z.

With the above-described construction to fill the pen the pen-section isplaced in the ink and air-pressure is introduced into the interior ofthe cap in the usual manner, so that the air will pass through theapertures d against the side walls of the sack, collapsing the same andexpelling the air, so that when the air-pressure is liberated the sackwill be filled with ink.

Instead of making the end of the barrel tapering I may provide a groove(0 in the surface of the barrel, which connects a corresponding aperturethrough the barrel, as a with the interior of the cap. This constructionenables a sack of greater capacity to be used than is possible with theconstruction described in Figs. 1 and 2. With either of theabove-described constructions the sack may be made to fit the barrelclosely, and the air-pressure will be applied to the side walls thereof,so as to collapse the same readily. The end of the barrel being closed,a pocket is formed between the apertures and said end, which is adaptedto hold the small quantity of ink which might possibly leak through thesack or past its month. When the pen is carried in the pocket, there isalso less likelihood that the apertures 60 will be clogged or filledwith dirt than would be the case if the apertures were in the end of thebarrel.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is

A fountain-pen comprising the pen-section, a collapsible rubber sackconnected thereto, a barrel having an air-tight connection with saidpen-section and into which said sack is fitted, a cap having anair-passage through its closed end, its open end being adapted to forman air-tight connection with the barrel at a point more or less remotefrom its closed end, said barrel having an aperture leading through theside thereof between said point of connection and the closed end of thesack, and being formed to provide a passage between said aperture andthe chamber included by said cap and the end of the barrel,substantially as described.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

SETH S. CROCKER.

Witnesses:

L. H. HARRIMAN, H. B. DAVIS.

